在读写文件的操作中,通常使用“块高速缓存”,以减少访问磁盘的次数,但为了保证系统的_

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问题:

在读写文件的操作中,通常使用“块高速缓存”,以减少访问磁盘的次数,但为了保证系统的______,关键块必须尽早写盘。

A.一致性
B.安全性
C.性能
D.可扩性

考点:普通考研计算机学科专业基础综合考研计算机学科专业基础综合
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()可免费携带35kg的物品。

A.残废军人

B.军运期间新老兵

C.军运期间退伍老兵

D.军运期间新兵入伍

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My brother has two ____in his room.

A.pair of glass

B.pairs of glass

C.pair of glasses

D.pairs of glasses

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患者,女性,58岁,右眼视物不清,眼前固定黑影3天。3天前患者无明显诱因晨起后出现右眼视物模糊,眼前黑影,相对固定,1天后未能缓解,黑影逐渐增大,变暗,发展为上半侧黑影。无畏光、流泪,无眼红、眼痛。患者否认心脏病、糖尿病、高血压等全身病史。平时血压偏低。眼科检查:VOD0.3,VOS1.0,双眼前段正常。

根据上述描述,最有可能的疾病是()

A.颅内肿瘤

B.视盘血管炎

C.急性视神经炎

D.视网膜静脉阻塞

E.前段缺血性视神经病变

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Where is love How can we find love

The past ages of man have all been carefully labeled by anthropologists. Descriptions like "Paleolithic Man", "Neolithic. Man", etc. , neatly sum up the whole periods. When the time comes for anthropologists to turn their attention to the twentieth century, they will surely choose the label "Legless Man". Histories of the time will go something like this: "in the twentieth century, people forgot how to use their legs. Men and women moved about in cars, buses and trains from a very early age. There were lifts and escalators in all large buildings to prevent people from walking. This situation was forced upon earth dwellers of that time because of miles each day. But the surprising thing is that they didn’t use their legs even when they went on holiday. They built cable railways, ski lifts and roads to the top of every huge mountain. All the beauty spots on earth were marred by the presence of large car parks. "

The future history books might also record that we were deprived of the use of our eyes. In our hurry to get from one place to another, we failed to see anything on the way. Air travel gives you a bird’s eye view of the world—or even less if the wing of the aircraft happens to get in your way. When you travel by car or train a blurred image of the countryside constantly smears the windows. Car drivers, in particular, are forever obsessed with the urge to go on and on: they never want to stop. Is it the lure of the great motorways, or what And as for sea travel, it hardly deserves mention. It is perfectly summed up in the words of the old song: "I joined the navy to see the world, and what did I see I saw the sea." The typical twentieth century traveler is the man who always says, "I’ve been there. " You mention the remotest, most evocative place names in the world like El Dorado, Kabul, Irkutsk and someone is bound to say, "I’ve been there"—meaning, "I drove through it at 100 miles an hour on the way to somewhere else. "

When you travel at high speed, the present means nothing: you live mainly in the future because you spend most of your time looking forward to arriving at some other place. But actual arrival, when it is achieved, is meaningless. You want to move on again. By traveling like this, you suspend all experience; the present ceases to be a reality: you might just as well be dead. The traveler on toot, on the other hand, lives constantly in the present. For him traveling and arriving are one and the same thing: he arrives somewhere with every step he makes. He experiences the present moment with his eyes, his ears and the whole of his body. At the end of his journey he feels a delicious physical weariness. He knows that sound. Satisfying sleep will be his: the just reward of all true travelers.

Travelling at high speed means().

A.people’s focus on the future

B.a pleasure

C.satisfying drivers’ great thrill

D.a necessity of life

题型:单项选择题

结核分枝杆菌

A.革兰染色阳性菌

B.革兰染色阴性的厌氧菌

C.抗酸染色阳性的细菌

D.革兰染色阴性的需氧菌

E.血清学检查对诊断有重要价值的细菌

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